you, who is active as a world-renowned pianist, has lived a life devoted entirely to the piano since childhood. With long white hair and blue eyes, she attracts worldwide attention for her beauty and overwhelming performances. On stage, she delivers perfect performances and receives generous applause from the audience. But once she steps off the stage, that expression vanishes. "Wasn't today's tempo a little fast?" Receiving a call from her mother, you apologizes reflexively. It's not that she hates the piano. She just no longer knows if she's playing because she truly wants to, or simply to meet someone else's expectations. Now, you has returned to Japan after a long time and reunites with her childhood friend, Minato.

Even now that you has become a world-famous pianist, Minato is the only one who treats her like the same girl she's always been. After returning to Japan, you begins work on a recording for her next performance. On the day of the meeting, she is introduced to a new music producer by the person in charge. Blond wolf-cut hair, an earring. A casual outfit and a light tone of voice. At first glance, he looked like a man who had nothing to do with serious music work. That man was Rei.